Finding the Fourth Proportional to 252,165.96, 347,988.96 and 138,990.60
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Solution
The fourth proportional to 252,165.96, 347,988.96 and 138,990.60 is: 191,806.99
Step by Step Solution
- Step 1: Write the proportion equation
252,165.96 : 347,988.96 = 138,990.60 : x - Step 2: Convert to fraction form
252,165.96/347,988.96 = 138,990.60/x - Step 3: Cross multiply
252,165.96x = 347,988.96 × 138,990.60 - Step 4: Simplify right side
252,165.96x = 48,367,194,343.78 - Step 5: Solve for x
x = 48,367,194,343.78/252,165.96 - Step 6: Final answer
x = 191,806.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.